style.css

/* Google Fonts - Poppins */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}
body 
{
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	background: #000;
}
section 
{
	position: absolute;
	width: 100vw;
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 2px;
	flex-wrap: wrap;
	overflow: hidden;
}
section::before 
{
	content: '';
	position: absolute;
	width: 100%;
	height: 100%;
	background: linear-gradient(#000,rgb(20, 180, 255),#000);
	animation: animate 5s linear infinite;
}
@keyframes animate 
{
	0%
	{
		transform: translateY(-100%);
	}
	100%
	{
		transform: translateY(100%);
	}
}
section span 
{
	position: relative;
	display: block;
	width: calc(6.25vw - 2px);
	height: calc(6.25vw - 2px);
	background: #181818;
	z-index: 2;
	transition: 1.5s;
}
section span:hover 
{
	background: rgb(20, 180, 255);
	transition: 0s;
}

.container {
  position: absolute;
  max-width: 380px;
  width: 100%;
  /* height: 57%; */
  padding: 25px;
  border-radius: 8px;
  background: #222;  
  box-shadow: 0 20px 40px rgba(0,0,0,9);
  z-index: 100;
  /* border: 2px solid blue; */
}
.container header {
  font-size: 30px;
  justify-content: center;
  align-items: center;
  font-weight: 600;
  padding-left:75px;
  color: #00d5ff;
}
.container form {
  margin-top: 30px;
}
form .field {
  margin-bottom: 20px;
}
form .input-field {
  position: relative;
  height: 50px;
  width: 100%;
  color: white;
  /* background-color: #303030; */
}
.input-field input {
  height: 100%;
  width: 100%;
  outline: none;
  border: none;
  border-radius: 8px;
  padding: 0 15px;
  font-size: 15px;
  background: #333;
  color: white;
  border: 1.5px solid #00b4f6;
}
.invalid input {
  border-color: #00aaff;
}
.input-field .show-hide {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: #ffffff;
  cursor: pointer;
  padding: 3px;
}
.field .error {
  display: flex;
  align-items: center;
  margin-top:10px;
  color: #ff0000;
  font-size: 14px;
  display: none;
}
.invalid .error {
  display: flex;
}
.error .error-icon {
  margin-right: 6px;
  font-size: 15px;
}
.create-password .error {
  align-items: flex-start;
}
.create-password .error-icon {
  margin-top: 4px;
}
.button {
  margin: 25px 0 6px;
}

form .links 
{
	position: relative;
	width: 100%;
	display: flex;
	justify-content: space-between;
}
form .links a 
{
	color: #fff;
	text-decoration: none;
}
form .links a:nth-child(2)
{
	color: rgb(20, 180, 255);
	font-weight: 600;
}

.button input {
  color: black;
  font-size: 19px;
  font-weight: 500;
  background-color: rgb(20, 180, 255);
  cursor: pointer;
  transition: all 0.3s ease;
}
.button input:hover {
  background-color: rgb(70, 86, 255);
  color: white;
}

.button input:active {
  transform: scale(0.95);
}

@media (max-width: 900px)
{
	section span 
	{
		width: calc(110vw - 2px);
		height: calc(110vw - 2px);
	}
}
@media (max-width: 600px)
{
	section span 
	{
		width: calc(100vw - 2px);
		height: calc(100vw - 2px);
	}
}

@media only screen and (max-width: 600px) {
  .container {
    width: 120vh;
    height: 150vh;
  }
}

@media only screen and (max-width: 400px) {
  .container {
    width: 120vh;
    height: 150vh;
  }
}

/* Media Query for Phones */
@media only screen and (max-width: 500px) {

  Section{
    width: 0vh;
    height: 0vh;
  }
  body {
    font-size: 14px; /* Adjust the font size for smaller screens */
  }

  .container {
    width: 100%; /* Adjust the container width for full width on small screens */
  }

  .field input,
  .links a,
  .button input {
    width: calc(100% - 20px); /* Make the input fields, links, and button full width with a little padding */
  }

  .error-text {
    font-size: 12px; /* Adjust the error text size for smaller screens */
  }
}